Snap fastener installation and fastener for the same



Dec. 22, 1936. J. c.- CALHOUN SNAP FASTENER INSTALLATION AND FASTENERFOR THE SAME Filed Feb. 21, 1933 15219922303: @1272 Cf Cal/mun PatentedDec. 1936 i I UNITED STATES PATENTOFFICE SNAP FASTENER INSTALLATION ANDFASTENER FOR THE S John e. Calhoun, West Quincy, Mass assigmor toWaited-Carr Fastener Corporation, Cambridge, Mass, a corporation of-Massachusetts Applieafion February 21, 1933, Serial No. 657,787

' a balms. (cl. 24-2023) My invention aims to provide improvements ingthrough a hole it in the base and by the in snap fastener attached heellifts for heels attaching prongs which stick into the ma oi shoes andsnap fasteners for the same. terial of the heel and prevent rotation ofthe Referring to the drawing which illustrates a socket. The socket alsohas a pair of rigid 5 preferred embodiment of my invention: projectionsllla extending from opposite edges 5 Figure '1- is aside elevation of ashoe heel thereof and located adjacent to the ends of the and heel lift;yieldable portions ill (Fig.2) to provide guide Fig. 2 is an enlargedbottom plan viw of the means for the yieldable portions of the stud heelwith the lift removed to show the fastener and to keep the fastenersfrom coming apart member carried by the heel; laterally. 10

Fig. 3 is a plan view of the heel lift show- The stud member l is formedfrom a single ing a fastener member attached thereto;. piece of sheetmetal and has a base it, a pair Fig. 4 is an enlarged section taken onthe of relatively straight side portions or yieldable line 6-4 of Figure1; fingers l6 extending from a point adjacent to Fig. 5 is a section ofthe heel fastener taken the center of the base in one direction and a 15on the line 5-5 of Fig. 2; and plurality of prongs 8 extending from thebase Fig. 6 is a side view of the heel lift fastener in the oppositedirection, as best illustrated in member before attachment. Figs. 3, 4,and 6. The yieldable fingers i6 of Referring to the drawing, I haveshown a the stud member extend from inwardly bent simple and ellicientfastening means for detachportions ll extending from the periphery ofthe able shoe heel structures particularly, though base toward thecenter. They have their free not exclusively, adapted for use withso-called ends bent outwardly to provide shoulders it for high heels ofwomens shoes. In the particular cooperative fastening engagement withthe structure illustrated, I have shown (Fig. l) a shoulders i 2 of thesocket. The stud member conventional high heel l for a womans shoe isattached by the relatively long prongs 3 which 25 having a shallowcylindrical bore 2 (Fig. 2) pass. into the material of the heel lift 6and formed at the lower end thereof. In the bore have their ends upset,as best shown in Fig. 4. 2 (Figs. 2 and 4) there is located av snap fas-My improved device is particularly useful in tener socket member 3 whichis secured in place connection with the heels of women's shoes bebymeans of a screw 4 and held against rotation cause it is merelynecessary to bore a shallow 30 by prongs 5 projecting into the materialof circular hole of substantial diameter in the heel the heel I. Theheel lift 6 of leather, rubber or I and because it is necessary to useonly a stud the like carries a stud member I attached thereand a socket;one of which is attached to the to by attaching prongs 8, as best shownin Figs. heel and the other of which is attached to the 3 3, 4, and 6.The fastener members are adapted heel lift. ;My improved fasteners arealso parto cooperate with each other when the heel lift ticularlydesirable because they are so 'con- 6 is pressed into position againstthe bottomof structed that they may be easily and quickly the heel,thereby to hold the parts in predeattached in the proper predeterminedrelation termined assembled relation, as shown in Fig. 4. to each partso that it is a simple matter to 40 I have found that it is desirable toprovide fasattach the heel lift in the proper relation to the 40 teningmembers which are simple in construcheel. Furthermore, theconstructionof the fastion, durable and so arranged that the lift willtener members in and of themselves cooperates be held in a predeterminedrelation to the heel to prevent relative rotation when they are enwhenattached. The socket member 3 (Figs. 2 gaged and the guide projectionslll on the and 5) is formed from a single piece of sheet socket help tocenter the stud relative to the metal and has a base portion 9, a pairof opsocket and prevent longitudinal movement of posed straight sidedyieldable portions or fingers the yieldable fingers l5 relative to thefingers in extending from the base in one direction and I'll a pluralityof-sharp pointed attaching prongs while I have illustrated and describeda Dre.

7 5 extending from the base in the opposite direcferred embodiment of myinvention, I do notwish 50 tion. The yieldable fingers have their freeends to be limited thereby, because the scope of my rolled to providesuitable shoulders I: for snap invention is best defined by thefollowing claims.

' fastening engagement with the stud-member 1. I claim:

As illustrated, the socket member 3 is attached 1. A snap fastenerinstallation of the class to the heel I. in the bore 2, by a screw 4pass described comprising, incombination, parts t be 55 fastenedtogether, a stud member secured to one of said parts and havingprojections extending outwardly therefrom and terminating in a planesubstantially parallel to said part, said projections having opposedsmooth edges and opposed sides formed with shoulders extending outwardlytherefrom, a socket member carried by the other of said parts and havinga pair of yieldable projections extending outwardly therefrom, a pairof. inwardly disposed shoulders on the ends of said yieldableprojections adapted to engage the shoulders of said stud member, and apair of substantially parallel smooth rigid projections extending fromsaid socket member and adapted to bear against the smooth edges of theprojections on said stud member thereby preventing lateral movement ofsaid stud member relative to said yieldable projections of the socketmember.

2. A snap fastener installation of the class described comprising, incombination, two parts to be fastened together, a stud member secured toone of said parts, said stud member having a base, a pair only ofyieldable projections extending outwardly from said base, saidprojections terminating in a pair of substantially parallel oppositelydisposed shoulders, the side edges of said projections including theends of said shoulders lying in a pair of parallel planes, a socketmember carried by the other of said parts and having a pair of yieldableprojections extendng outwardly therefrom, a pair of inwardly disposedshoulders on the ends of said projections engaging the shoulders of thestud member, and a pair of relatively smooth rigid projections extendingfrom said socket member and bearing on the edges of said projections ofthe stud member, thereby producing a relatively rigid relationship andpreventing lateral movement of said stud projections relative to saidsocket projections.

3. A snap fastener comprising a pair of members, each of said fastenermembers being formed from a single piece of sheet metal, one of saidfastener members having a base, a pair of straight sided andstraight-edged yieldable projections extending from said base and beingnearer together at their free ends than at the base, the ends of saidprojections being rolled outwardly away from each. other to provideshoulders with cam surfaces, said fastener member having a plurality ofprongs formed from the material of said base and extending away fromsaid base in a direction opposite to said yieldable projections toengage a supporting member, the other of said fastener members having abase, a pair of yieldable projections formed from the material of saidbase and extending away from said base substantially at right angles tosaid base, each of said yieldable projections having an inwardly rolledshoulder engaging the corresponding shoulder of the first-mentioned snapfastener member, a pair of parallel projections extending away from saidbase adjacent to the edges of said yieldable projections and bearingagainst the straight edges of the yieldable projections of thefirst-mentioned snap fastener member, said pairs of yieldable shoulderedprojections being so proportioned that lateral motion of the stud memberrelative to the socket member is prevented by the relatively rigidengagement of the said projections of the socket member with thestraight edges of the projections on the stud member.

JOHN C. CALHOUN.

